"Not far. Maybe a hundred feet." It was hard to tell, in this light. Badd squinted and saw what looked like rusting tracks heading into the mouth of the opening. "Might be an old mine shaft, actually. Do you want me to go take a look?"

He didn't want to leave Byrne alone, but he wouldn't be going far. If the tunnel was already collapsed there'd be no point in investigating it further. On the other hand a windy tunnel like that would be an excellent place to lose yourself for the space between night and morning...as long as you could make your way out afterwards.